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<p>The preprocessor supports text macro replacement and function-like text macro replacement.
</p>
<table id="toc" class="toc"><tr><td>
<div id="toctitle"><h2>Contents</h2></div>
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<li class="toclevel-1 tocsection-1"><a href="replace.html#Syntax"><span class="tocnumber">1</span> <span class="toctext">Syntax</span></a></li>
<li class="toclevel-1 tocsection-2">
<a href="replace.html#Explanation"><span class="tocnumber">2</span> <span class="toctext">Explanation</span></a>
<ul>
<li class="toclevel-2 tocsection-3">
<a href="replace.html#.23define_directives"><span class="tocnumber">2.1</span> <span class="toctext">#define directives</span></a>
<ul>
<li class="toclevel-3 tocsection-4"><a href="replace.html#Object-like_macros"><span class="tocnumber">2.1.1</span> <span class="toctext">Object-like macros</span></a></li>
<li class="toclevel-3 tocsection-5"><a href="replace.html#Function-like_macros"><span class="tocnumber">2.1.2</span> <span class="toctext">Function-like macros</span></a></li>
</ul>
</li>
<li class="toclevel-2 tocsection-6"><a href="replace.html#.23_and_.23.23_operators"><span class="tocnumber">2.2</span> <span class="toctext"># and ## operators</span></a></li>
<li class="toclevel-2 tocsection-7"><a href="replace.html#.23undef_directive"><span class="tocnumber">2.3</span> <span class="toctext">#undef directive</span></a></li>
</ul>
</li>
<li class="toclevel-1 tocsection-8"><a href="replace.html#Predefined_macros"><span class="tocnumber">3</span> <span class="toctext">Predefined macros</span></a></li>
<li class="toclevel-1 tocsection-9"><a href="replace.html#Example"><span class="tocnumber">4</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-10"><a href="replace.html#References"><span class="tocnumber">5</span> <span class="toctext">References</span></a></li>
<li class="toclevel-1 tocsection-11"><a href="replace.html#See_also"><span class="tocnumber">6</span> <span class="toctext">See also</span></a></li>
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<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Syntax">edit</a>]</span> <span class="mw-headline" id="Syntax">Syntax</span>
</h3>
<table class="t-sdsc-begin">

<tr>
<td colspan="10" class="t-sdsc-sep">
</td>
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<tr class="t-sdsc">
<td> <code><b>#define</b></code> <span class="t-spar">identifier</span> <span class="t-spar">replacement-list</span><span class="t-mark">(optional)</span>
</td>
<td> (1)
</td>
<td class="t-sdsc-nopad">
</td>
</tr>



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<td colspan="10" class="t-sdsc-sep">
</td>
</tr>
<tr class="t-sdsc">
<td> <code><b>#define</b></code> <span class="t-spar">identifier</span><code><b>(</b></code> <span class="t-spar">parameters</span> <code><b>)</b></code> <span class="t-spar">replacement-list</span>
</td>
<td> (2)
</td>
<td class="t-sdsc-nopad">
</td>
</tr>



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<td colspan="10" class="t-sdsc-sep">
</td>
</tr>
<tr class="t-sdsc">
<td> <code><b>#define</b></code> <span class="t-spar">identifier</span><code><b>(</b></code> <span class="t-spar">parameters</span><code><b>, ... )</b></code> <span class="t-spar">replacement-list</span>
</td>
<td> (3)
</td>
<td> <span class="t-mark-rev t-since-c99">(since C99)</span>
</td>
</tr>



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<td colspan="10" class="t-sdsc-sep">
</td>
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<tr class="t-sdsc">
<td> <code><b>#define</b></code> <span class="t-spar">identifier</span><code><b>( ... )</b></code> <span class="t-spar">replacement-list</span>
</td>
<td> (4)
</td>
<td> <span class="t-mark-rev t-since-c99">(since C99)</span>
</td>
</tr>



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<td colspan="10" class="t-sdsc-sep">
</td>
</tr>
<tr class="t-sdsc">
<td> <code><b>#undef </b></code> <span class="t-spar">identifier</span>
</td>
<td> (5)
</td>
<td class="t-sdsc-nopad">
</td>
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<td colspan="10" class="t-sdsc-sep">
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<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Explanation">edit</a>]</span> <span class="mw-headline" id="Explanation">Explanation</span>
</h3>
<h4>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: #define directives">edit</a>]</span> <span class="mw-headline" id=".23define_directives"><code>#define</code> directives</span>
</h4>
<p>The <code>#define</code> directives define the <span class="t-spar">identifier</span> as a macro, that is they instruct the compiler to replace all successive occurrences of <span class="t-spar">identifier</span> with <span class="t-spar">replacement-list</span>, which can be optionally additionally processed. If the identifier is already defined as any type of macro, the program is ill-formed unless the definitions are identical. 
</p>
<h5>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Object-like macros">edit</a>]</span> <span class="mw-headline" id="Object-like_macros">Object-like macros</span>
</h5>
<p>Object-like macros replace every occurrence of a defined <span class="t-spar">identifier</span> with <span class="t-spar">replacement-list</span>. Version (1) of the <code>#define</code> directive behaves exactly like that.
</p>
<h5>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Function-like macros">edit</a>]</span> <span class="mw-headline" id="Function-like_macros">Function-like macros</span>
</h5>
<p>Function-like macros replace each occurrence of a defined <span class="t-spar">identifier</span> with <span class="t-spar">replacement-list</span>, additionally taking a number of arguments, which then replace corresponding occurrences of any of the <span class="t-spar">parameters</span> in the <span class="t-spar">replacement-list</span>. The number of arguments must be the same as the number of arguments in the macro definition (<span class="t-spar">parameters</span>) or the program is ill-formed. If the identifier is not in functional-notation, i.e. does not have parentheses after itself, it is not replaced at all.
</p>
<p>Version (2) of the <code>#define</code> directive defines a simple function-like macro.
</p>
<p>Version (3) of the <code>#define</code> directive defines a function-like macro with variable number of arguments. The additional arguments can be accessed using <code>__VA_ARGS__</code> identifier, which is then replaced with arguments, supplied with the identifier to be replaced.
</p>
<p>Version (4) of the <code>#define</code> directive defines a function-like macro with variable number of arguments, but no regular arguments. The arguments can be accessed only with <code>__VA_ARGS__</code> identifier, which is then replaced with arguments, supplied with identifier to be replaced.
</p>
<h4>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: # and ## operators">edit</a>]</span> <span class="mw-headline" id=".23_and_.23.23_operators"><code>#</code> and <code>##</code> operators</span>
</h4>
<p>In function-like macros, a <code>#</code> operator before an identifier in the <span class="t-spar">replacement-list</span> runs the identifier through parameter replacement and encloses the result in quotes, effectively creating a string literal. In addition, the preprocessor adds backslashes to escape the quotes surrounding embedded string literals, if any, and doubles the backslashes within the string as necessary. All leading and trailing whitespace is removed, and any sequence of whitespace in the middle of the text (but not inside embedded string literals) is collapsed to a single space. This operation is called "stringification". If the result of stringification is not a valid string literal, the behavior is undefined.
</p>
 <table class="t-rev-begin">
<tr class="t-rev t-since-c99">
<td>
<p>When <code>#</code> appears before <code>__VA_ARGS__</code>, the entire expanded __VA_ARGS__ is enclosed in quotes:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#define showlist(...) puts(#__VA_ARGS__)</span>
showlist<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>            <span class="co1">// expands to puts("")</span>
showlist<span class="br0">(</span><span class="nu0">1</span>, <span class="st0">"x"</span>, <span class="kw4">int</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// expands to puts("1, \"x\", int")</span></pre></div></div>
</td>
<td><span class="t-mark-rev t-since-c99">(since C99)</span></td>
</tr>
</table>
<p>A <code>##</code> operator between any two successive identifiers in the <span class="t-spar">replacement-list</span> runs parameter replacement on the two identifiers and then concatenates the result. This operation is called "concatenation" or "token pasting". Only tokens that form a valid token together may be pasted: identifiers that form a longer identifier, digits that form a number, or operators <code>+</code> and <code>=</code> that form a <code>+=</code>. A comment cannot be created by pasting <code>/</code> and <code>*</code> because comments are removed from text before macro substitution is considered. If the result of concatenation is not a valid token, the behavior is undefined.
</p>
<p>Note: some compilers offer an extension that allows ## to appear after a comma and before __VA_ARGS__, in which case the ## does nothing when __VA_ARGS__ is non-empty, but removes the comma when __VA_ARGS__ is empty: this makes it possible to define macros such as <code>fprintf (stderr, format, ##__VA_ARGS__)</code>
</p>
<h4>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: #undef directive">edit</a>]</span> <span class="mw-headline" id=".23undef_directive"><code>#undef</code> directive</span>
</h4>
<p>The <code>#undef</code> directive undefines the <span class="t-spar">identifier</span>, that is it cancels the previous definition of the <span class="t-spar">identifier</span> by <code>#define</code> directive. If the identifier does not have an associated macro, the directive is ignored.
</p>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Predefined macros">edit</a>]</span> <span class="mw-headline" id="Predefined_macros">Predefined macros</span>
</h3>
<p>The following macro names are predefined in any translation unit:
</p>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>__STDC__</div></div>
</td>
<td>   expands to the integer constant <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span>. This macro is intended to indicate a conforming implementation <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_VERSION__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span></span></div>
</div>
</td>
<td>   expands to an integer constant of type <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span></span></span> whose value increases with each version of the C standard:
<ul>
<li> <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">199409L</span></span></span> <span class="t-mark-rev t-since-c95">(C95)</span>
</li>
<li> <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">199901L</span></span></span> <span class="t-mark-rev t-since-c99">(C99)</span>
</li>
<li> <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">201112L</span></span></span> <span class="t-mark-rev t-since-c11">(C11)</span>  <br> <span class="t-mark">(macro constant)</span>
</li>
</ul>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_HOSTED__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   expands to the integer constant <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if the implementation is hosted (runs under an OS), <span class="t-c"><span class="mw-geshi c source-c">​<span class="nu0">0</span>​</span></span> if freestanding (runs without an OS)  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>__FILE__</div></div>
</td>
<td>   expands to the name of the current file, as a character string literal, can be changed by the <a href="line.html" title="c/preprocessor/line">#line</a> directive <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>__LINE__</div></div>
</td>
<td>   expands to the source file line number, an integer constant, can be changed by the <a href="line.html" title="c/preprocessor/line">#line</a> directive <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>__DATE__</div></div>
</td>
<td>   expands to the date of translation, a character string literal of the form "Mmm dd yyyy". The name of the month is as if generated by <span class="t-c"><span class="mw-geshi c source-c"><a href="../chrono/asctime.html"><span class="kw515">asctime</span></a><span class="br0">(</span><span class="br0">)</span></span></span> <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>__TIME__</div></div>
</td>
<td>   expands to the time of translation, a character string literal of the form "hh:mm:ss", as in the time generated by <span class="t-c"><span class="mw-geshi c source-c"><a href="../chrono/asctime.html"><span class="kw515">asctime</span></a><span class="br0">(</span><span class="br0">)</span></span></span> <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>

</table>
<p>The following additional macro names may be predefined by an implementation:
</p>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_ISO_10646__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   expands to an integer constant of the form <code>yyyymmL</code>, if <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">wchar_t</span></span></span> uses Unicode, the date indicates the latest revision of Unicode supported <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_IEC_559__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if IEC 60559 is supported  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_IEC_559_COMPLEX__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if IEC 60559 complex arithmetic is supported  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_UTF_16__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if <span class="t-c"><span class="mw-geshi c source-c">char16_t</span></span> use UTF-16 encoding  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_UTF_32__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if <span class="t-c"><span class="mw-geshi c source-c">char32_t</span></span> use UTF-32 encoding  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_MB_MIGHT_NEQ_WC__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if wide character encoding of the basic character set may not equal their narrow encoding   <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_ANALYZABLE__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if <a href="../language/analyzability.html" title="c/language/analyzability">analyzability</a> is supported  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_LIB_EXT1__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to an integer constant <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">201112L</span></span></span> if <a href="../error.html" title="c/error">bounds-checking interfaces</a> are supported  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_NO_ATOMICS__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if <a href="../language/atomic.html" title="c/language/atomic">atomic</a> types and <a href="../atomic.html" title="c/atomic">atomic operations library</a> are not supported  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_NO_COMPLEX__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if <a href="../language/arithmetic_types.html#Complex_floating_types" title="c/language/arithmetic types">complex types</a> and <a href="../numeric/complex.html" title="c/numeric/complex">complex math library</a> are not supported  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_NO_THREADS__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if  <a href="../thread.html" title="c/thread">multithreading</a> is not supported  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>__STDC_NO_VLA__</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   expands to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if <a href="../language/array.html#Variable-length_arrays" title="c/language/array">variable-length arrays</a> are not supported  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>

</table>
<p>The values of these macros (except for <code>__FILE__</code> and <code>__LINE__</code>) remain constant throughout the translation unit. Attempts to redefine or undefine these macros result in undefined behavior.
</p>
 <table class="t-rev-begin">
<tr class="t-rev t-since-c99">
<td>
<p>The predefined variable <span class="t-c"><span class="mw-geshi c source-c">__func__</span></span> (see <a href="../language/function_definition.html#func" title="c/language/function definition">function definition</a> for details) is not a preprocessor macro, even though it is sometimes used together with <code>__FILE__</code> and <code>__LINE__</code>, e.g. by <span class="t-lc"><a href="../error/assert.html" title="c/error/assert">assert</a></span>.
</p>
</td>
<td><span class="t-mark-rev t-since-c99">(since C99)</span></td>
</tr>
</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span>
</h3>
<div class="t-example">
<div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
 
<span class="co1">//make function factory and use it</span>
<span class="co2">#define FUNCTION(name, a) int fun_##name(int x) { return (a)*x;}</span>
 
FUNCTION<span class="br0">(</span>quadruple, <span class="nu0">4</span><span class="br0">)</span>
FUNCTION<span class="br0">(</span><span class="kw4">double</span>, <span class="nu0">2</span><span class="br0">)</span>
 
<span class="co2">#undef FUNCTION</span>
<span class="co2">#define FUNCTION 34</span>
<span class="co2">#define OUTPUT(a) puts( #a )</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">"quadruple(13): %d<span class="es1">\n</span>"</span>, fun_quadruple<span class="br0">(</span><span class="nu0">13</span><span class="br0">)</span> <span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">"double(21): %d<span class="es1">\n</span>"</span>, fun_double<span class="br0">(</span><span class="nu0">21</span><span class="br0">)</span> <span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">"%d<span class="es1">\n</span>"</span>, FUNCTION<span class="br0">)</span><span class="sy4">;</span>
    OUTPUT<span class="br0">(</span>million<span class="br0">)</span><span class="sy4">;</span>               <span class="co1">//note the lack of quotes</span>
<span class="br0">}</span></pre></div></div>
<p>Output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">quadruple(13): 52
double(21): 42
34
million</pre></div></div> 
</div>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: References">edit</a>]</span> <span class="mw-headline" id="References">References</span>
</h3>
<div class="t-ref-std-11">
<ul><li> C11 standard (ISO/IEC 9899:2011): 
</li></ul>
<dl><dd>
<ul><li> 6.10.3 Macro replacement (p: 166-173)
</li></ul>
</dd></dl>
<dl><dd>
<ul><li> 6.10.8 Predefined macro names (p: 175-176)
</li></ul>
</dd></dl>
<div class="t-ref-std-c99">
<ul><li> C99 standard (ISO/IEC 9899:1999): 
</li></ul>
<dl><dd>
<ul><li> 6.10.3 Macro replacement (p: 151-158)
</li></ul>
</dd></dl>
<dl><dd>
<ul><li> 6.10.8 Predefined macro names (p: 160-161)
</li></ul>
</dd></dl>
<div class="t-ref-std-c89">
<ul><li> C89/C90 standard (ISO/IEC 9899:1990): 
</li></ul>
<dl><dd>
<ul><li> 3.8.3 Macro replacement 
</li></ul>
</dd></dl>
<dl><dd>
<ul><li> 3.8.8 Predefined macro names 
</li></ul>
</dd></dl>
</div>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see">
<span><a href="../../cpp/preprocessor/replace.html" title="cpp/preprocessor/replace">C++ documentation</a></span> for <span class="t-dsc-see-tt"><span>Replacing text macros</span></span>
</div>
</td>
</tr>

</table>
</div>
</div>

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